logo_over = new Image(175,26); logo_over.src = '/images/logo_small_over.gif';
logo_off = new Image(175,26); logo_off.src = '/images/logo_small.gif';

function logoOn() {
	document.images[0].src = logo_over.src;
}
function logoOff() {
	document.images[0].src = logo_off.src;
}